Global Patent Index - EP 4026429 A1

EP 4026429 A1 20220713 - A HEAT EXCHANGER WITH INTEGRATED TESTING SYSTEM

Title (en)

A HEAT EXCHANGER WITH INTEGRATED TESTING SYSTEM

Title (de)

WÄRMETAUSCHER MIT INTEGRIERTEM PRÜFSYSTEM

Title (fr)

ÉCHANGEUR DE CHALEUR DOTÉ D'UN SYSTÈME DE TEST INTÉGRÉ

Publication

EP 4026429 A1 20220713 (EN)

Application

EP 22159535 A 20190108

Priority

  • IE S20180009 A 20180116
  • EP 19700647 A 20190108
  • EP 2019050320 W 20190108

Abstract (en)

A heat exchanger apparatus (1) has a heating stage (2) with a product side and a hot water side and a cooling stage (5) with a product side and a coolant side, and also regeneration stages (3, 4) with treated and un-treated product sides. There are valves (V2-V12) including a cooling stage outlet valve (V6), and pressure sensors (PT1, PT2, PT3, PT4), and pumps (P1, P2, P3) for pumping process liquid through the product sides. A PLC controller is programmed to operate the pumps with outlet valves closed to pressurise the product sides of the stages at a pressure dynamically maintained by control of the pumps in response to sensed pressure. The valves are controlled to firstly vent the heating and cooling sides of the heating and cooling stages with the product sides pressurised, and then in a second phase to vent the downstream (treated) product sides of regeneration stages (3, 4). Also, an in-line holding time test is performed by monitoring time for step rises in temperature to reach a temperature sensor (TT1B) and the outlet end of a holding tube (22).

IPC 8 full level

A23C 3/033 (2006.01); A23L 3/00 (2006.01); A23L 3/18 (2006.01); G01M 3/32 (2006.01)

CPC (source: EP US)

A01J 11/16 (2013.01 - EP); A23C 3/033 (2013.01 - EP US); A23C 3/0332 (2013.01 - US); A23C 3/0337 (2013.01 - US); A23L 2/46 (2013.01 - EP); A23L 3/003 (2013.01 - EP US); A23L 3/20 (2013.01 - EP US); A23L 3/22 (2013.01 - US); F28D 9/00 (2013.01 - US); G01M 3/2815 (2013.01 - US); G01M 3/3227 (2013.01 - EP); F28D 9/00 (2013.01 - EP); F28F 2200/00 (2013.01 - EP US); F28F 2265/16 (2013.01 - EP US); G01M 3/32 (2013.01 - US)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2019141538 A1 20190725; EP 3740078 A1 20201125; EP 3740078 B1 20220406; EP 4026429 A1 20220713; US 11885572 B2 20240130; US 2020337322 A1 20201029

DOCDB simple family (application)

EP 2019050320 W 20190108; EP 19700647 A 20190108; EP 22159535 A 20190108; US 201916960436 A 20190108